Actress Olivia Wilde was the target of Justin Bieber fans' fury earlier this month over a Twitter.com post she made about the singer.

The Baby hitmaker made headlines after he was snapped in London without his shirt on as he celebrated his 19th birthday and the Tron: Legacy star took to her social networking page to remark on the singer's odd antics.

In a post, she wrote, "Bieber, put your f**king shirt on."

However, Wilde was hit with a barrage of abuse from the pop superstar's fans over her comment, which she insists was made out of concern.

In an interview with CNN.com, she reveals, "You know, it's something I'd say to my little brother, and I probably have said it. You know, just, 'Put your shirt on. It's cold out there.' I meant it with all the love in the world. It's pretty much the funniest thing that's ever happened to me because my Twitter feed is now filled with the most hilarious abuse."